How is everybody doing?


#1

I don't know where to go from here. I am getting an error code that students is not defined. But I've used students before and never got that error code. Can someone look at this?

Thanks!

lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
"name": "Alice",
"homework": [100.0, 92.0, 98.0, 100.0],
"quizzes": [82.0, 83.0, 91.0],
"tests": [89.0, 97.0]
}
tyler = {
"name": "Tyler",
"homework": [0.0, 87.0, 75.0, 22.0],
"quizzes": [0.0, 75.0, 78.0],
"tests": [100.0, 100.0]
}

def average(numbers):
total = sum(numbers)
total = float(total)
return total / len(numbers)

def get_average (student):
homework = average(student['homework'])
quizzes = average(student['quizzes'])
tests = average(student['tests'])
return (.10 * homework) + (.30 * quizzes) + (.60 * tests)

def get_letter_grade (score):
if score >= 90:
return "A"
elif score >= 80:
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return "D"
else:
return "F"

print get_letter_grade(get_average(lloyd))

def get_class_average(students):
results = []
for student in students:
results.append(get_average(student))
return average(results)

print get_class_average (students)
print get_letter_grade (get_class_average(students))


#2

where is "students" list?

I mean, i can't find out list of "students" in your codes.

In your codes, please see "print get_class_average(students)" line.

not in defined function, you don't have what "students" list is.

maybe i recommend you that add "students = [lloyd, alice, tyler]" code between "get_class_average" function and "print get_class_average(students)".

thx :smile:


#3

RIGHT:

students = [lloyd,alice,tyler]
print get_class_average(students)
print get_letter_grade(get_class_average(students))

WRONG:

print get_class_average([lloyd,alice,tyler])
print get_letter_grade(get_class_average([lloyd,alice,tyler]))

But both are actually right. The lesson will fail since it's missing the students, so if you define it you should be fine